ci: Remove `migration_checks` as a required check (#26833)

Marshall Bowers created

This PR removes the `migration_checks` job as a required check.

This was not required before, and we shouldn't make it required, as
there are cases where we need to bypass it, as is the case in
https://github.com/zed-industries/zed/pull/26832.

Release Notes:

- N/A

Change summary

.github/workflows/ci.yml | 1 -
1 file changed, 1 deletion(-)

Detailed changes

.github/workflows/ci.yml 🔗

@@ -453,7 +453,6 @@ jobs:
             [[ "${{ needs.linux_tests.result }}"          != 'success' ]] && { RET_CODE=1; echo "Linux tests failed"; }
             [[ "${{ needs.windows_tests.result }}"        != 'success' ]] && { RET_CODE=1; echo "Windows tests failed"; }
             [[ "${{ needs.windows_clippy.result }}"       != 'success' ]] && { RET_CODE=1; echo "Windows clippy failed"; }
-            [[ "${{ needs.migration_checks.result }}"     != 'success' ]] && { RET_CODE=1; echo "Migration checks failed"; }
             [[ "${{ needs.build_remote_server.result }}"  != 'success' ]] && { RET_CODE=1; echo "Remote server build failed"; }
           fi
           if [[ "$RET_CODE" -eq 0 ]]; then